CN203920150U - A kind of mathematics teaching aid - Google Patents
A kind of mathematics teaching aid Download PDFInfo
- Publication number
- CN203920150U CN203920150U CN201420027359.3U CN201420027359U CN203920150U CN 203920150 U CN203920150 U CN 203920150U CN 201420027359 U CN201420027359 U CN 201420027359U CN 203920150 U CN203920150 U CN 203920150U
- Authority
- CN
- China
- Prior art keywords
- ruler
- protractor
- chute
- chalk
- bush
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model provides a kind of mathematics teaching aid, belong to educational aid field, it comprises successively and connects and surround leg-of-mutton the first ruler, the second ruler and the 3rd ruler and protractor, the intersection point of described the first ruler and the second ruler intersects at the initial point of protractor by tumbler, on described the first ruler and the 3rd ruler, be respectively equipped with chute, in the chute of described the first ruler, be provided with sliding bar, on described sliding bar, be movably equipped with the bush of chalk freely rotating, described the second ruler is arranged in the chute of the 3rd ruler by sliding part.The utility model is simple in structure, ruler, protractor, bush of chalk are combined to the common function that has realized set square, protractor, compasses, and, three rulers are combined with protractor and can draw the angle of any angle or triangle at any angle, ruler is combined with the circle that can draw different radii with bush of chalk, use and carry all very convenient.
Description
(1) technical field
The utility model relates to teaching aid, specifically a kind of mathematics teaching aid.
(2) background technology
Now, teacher is in teaching process, often use teaching aid to map on blackboard, especially in geometric construction presentation process, often need on blackboard, draw the geometric figures such as straight line, line segment, triangle and demonstrate, these teaching aids relatively disperse, and carry inconvenience, during mapping, need to change back and forth, reduce the efficiency of attending class.
(3) summary of the invention
Technical assignment of the present utility model is for the deficiencies in the prior art, and a kind of mathematics teaching aid simple in structure, multiduty is provided.
The utility model solves the technical scheme that its technical problem adopts:
A kind of mathematics teaching aid, comprise successively and connect and surround leg-of-mutton the first ruler, the second ruler and the 3rd ruler and protractor, the intersection point of described the first ruler and the second ruler intersects at the initial point of protractor by tumbler, on described the first ruler and the 3rd ruler, be respectively equipped with chute, in the chute of described the first ruler, be provided with sliding bar, on described sliding bar, be movably equipped with the bush of chalk freely rotating, described the second ruler is arranged in the chute of the 3rd ruler by sliding part.
Further, the back side of described the first ruler, the second ruler and protractor intersection is provided with sucker.
Compared with prior art, the beneficial effect producing is a kind of mathematics teaching aid of the present utility model:
The utility model is simple in structure, ruler, protractor, bush of chalk are combined to the common function that has realized set square, protractor, compasses, and, three rulers are combined with protractor and can draw the angle of any angle or triangle at any angle, ruler is combined with the circle that can draw different radii with bush of chalk, use and carry all very convenient.
(4) accompanying drawing explanation
Accompanying drawing 1 is structure chart of the present utility model.
Accompanying drawing 2 is the amplification assumption diagram of label M in Fig. 1.
In figure, the 1, first ruler, the 2, second ruler, the 3, the 3rd ruler, 4, protractor, 5, tumbler, 6, chute, 7, sliding part, 8, sliding bar, 9, bush of chalk.
(5) specific embodiment
Below in conjunction with accompanying drawing, a kind of mathematics teaching aid of the present utility model is described in detail below.
As shown in accompanying drawing 1,2, a kind of mathematics teaching aid of the present utility model, it comprises successively and connects and surround leg-of-mutton the first ruler 1, the second ruler 2 and the 3rd ruler 3 and protractor 4, the intersection point of described the first ruler 1 and the second ruler 2 intersects at the initial point of protractor 4 by tumbler 5, on described the first ruler 1 and the 3rd ruler 3, be respectively equipped with chute 6, in the chute 6 of described the first ruler 1, be provided with sliding bar 8, on described sliding bar 8, be movably equipped with the bush of chalk 9 freely rotating, described the second ruler 2 is arranged in the chute 6 of the 3rd ruler 3 by sliding part 7.Described the first ruler 1, the second ruler 2 are also provided with sucker with the back side of protractor 4 intersections.
In use procedure, three rulers are combined with protractor 4 and can draw the angle of any angle or triangle at any angle, and ruler is combined with the circle that can draw different radii with bush of chalk 9.
Its processing and fabricating of a kind of mathematics teaching aid of the present utility model is simple and convenient, processing and fabricating shown in by specification accompanying drawing.
Except the technical characterictic described in description, be the known technology of those skilled in the art.
Claims (2)
1. a mathematics teaching aid, comprise successively and connect and surround leg-of-mutton the first ruler (1), the second ruler (2) and the 3rd ruler (3) and protractor (4), it is characterized in that: the intersection point of described the first ruler (1) and the second ruler (2) intersects at the initial point of protractor (4) by tumbler (5), on described the first ruler (1) and the 3rd ruler (3), be respectively equipped with chute (6), in the chute (6) of described the first ruler (1), be provided with sliding bar (8), on described sliding bar (8), be movably equipped with the bush of chalk (9) freely rotating, described the second ruler (2) is arranged in the chute (6) of the 3rd ruler (3) by sliding part (7).
2. a kind of mathematics teaching aid according to claim 1, is characterized in that: described the first ruler (1), the second ruler (2) are provided with sucker with the back side of protractor (4) intersection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420027359.3U CN203920150U (en) | 2014-01-16 | 2014-01-16 | A kind of mathematics teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420027359.3U CN203920150U (en) | 2014-01-16 | 2014-01-16 | A kind of mathematics teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203920150U true CN203920150U (en) | 2014-11-05 |
Family
ID=51816018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420027359.3U Expired - Fee Related CN203920150U (en) | 2014-01-16 | 2014-01-16 | A kind of mathematics teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203920150U (en) |
-
2014
- 2014-01-16 CN CN201420027359.3U patent/CN203920150U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20160116 |
|
| EXPY | Termination of patent right or utility model |